Tension regulator for slashers



L. L. GOWAN rausxou REGULATOR FOR smsrmas Filed June so. 1926 [F E? I 3 Sheets-Sheet 1 i Q 31 L w mmm'l l u q I I i I y; a ,w @P @FWMW Dec. 20, 1927. 1,653,397

L. L. GOWAN TENSION REGULATOR FOR smsnms Filed June 30. 1926 3 shee'is-sheet 2 Dec. 20, 1927.

L-. L. GQWAN TENSION REGULATOR FOR SLASHERS,

, Filed June 30. 1926 3 Sheets-Sheet 5 Patented D... 20, 1927.

"UNETED STATES PATENT OFFICE.

LEE LLOYD eownn, or NEWBERRY, SOUTH CAROLINA, Assrenon or ONE-HALF 'ro JAMES M. DAVIS, or NEWBERRY, sour CAROLINA.

, Tens on. REGULAT R non SLASHERS.

Application filed June so,

This invention has relation to that type of slasher (i. e., mechanism for winding yarn on warp-beams) in which the tension of winding is maintained uniform DOtWltlP standing the increase in diameter of the roll on the warp-beam; and the object of the present invention is toprovide an automatic mechanism which will insure uniformity of winding throughout the winding process, as more fully hereinafter set forth.

In the drawings' I Fig. 1 is an end elevation of a slasher embodying my invention;

Fig. 2 is a plan view of the same;

Fig. 3 is a detail view of the clutch-shifting device taken on the line 33 of Fig. 1;

Fig. 4 is a vertical sectional view taken on the line 44 of Fig. 1;

Fig. 5 is a vertical sectional View taken on the line 5-5 of Fig. 1;

Figs. 6, 7, 8, 9 and 10 are views of details hereinafter described.

Referring to the drawings by referencenumerals, 10 designates the usual warp-beam driven by the usual gearing of which 11 1s the driven pinion. The speed of this pinion 11 is determined by the friction-clutch 12 of the usual type, which is held in frictional engagement by means of an upstanding lever 13 which is normally pressed toward'the pinion by means of a mechanism embodying a horizontal shaft 14, an arm 15 on sand shaft adapted to press against the upper end of said lever 13, and aweight-arm 16 carrying a slidable weight 17. By ad usting the weight 17 along the arm 16, the leverage is varied and, consequently, the friction at the clutch 12 is varied, thereby en abling the necessary variation in the winding of the yarn on the beam. My mechanism provides for automatically ad usting the weight 17 away from the fulcrum of the lever 16 as the beam increases in diameter, with the consequential need for increased friction at the clutch 12, this gradual increase of clutch-friction being necessary in order to compensate for the increasing resistance due to the increase in diameter of the yarn-roll on the warp-beam and thus maintain a uniform tension on the yarn.

A rock-shaft 18 is journalled on standards 18 mounted on the usual frame of the apparatus. One end of this rock-shaft 18 is provided with an upstanding arm 19 carrying a roller 20 adapted to rest normally,

1926. Serial No. 119,598.

swings upwardly and d0wnwardly.- Secured by a pivot-stud 24 to the outer, free end of the arm 21 is a companion lever 22 which is piv0ted, a t a point between its ends, on a stud 22 affixed to the frame of the machinelna longitudinal slot 25 in the lever 22 is mounted apivot-stud 26, and pivotally attached at its lower end to said stud 26 is a rod 27 whose upper end is connected by a universal joint to one end of the lever 29 pivoted at 30 to'the frame of the machine.- The upper end of this lever 29 is slotted and engaged with a horizontal pin 31 projecting from one side of the weight 17.

With the foregoing mechanism, it will be seen that as the yarn-roll on the beam increases in size, the shaft 18 will be rocked in a direction to raise the outer end of arm 21, thus exerting a downward pull, through the medium' of pivoted lever'22, on the rod 27 The downward pull on the rod 27 will,

through the medium of. lever 29, slide the weight 17 outwardly away from the fulcrum 1 of its lever 16, thus gradually increasing the friction at the clutch as the warp-beam grows in diameter. To restore the parts to starting position, I provide a pedal-lever 32 connected by a rod 33 to the arm 21, said arm 2l'being provided with a slot 33 to enable the point of adjustment of the rod 33 to be varied. By pressing downon the pedalend of the lever 32, the levers 21 and 22 will cause an upward movement of the rod 27, thus sliding the weight back to starting position, near the fulcrum of its lever, and also restoring all'the other parts to starting position.

The special adjusting mechanism shown particularly in Fig. 7 is advantageous. This mechanism provides for a wide range of adjustment by moving the stud 26 along the slot 25. This wide range of adjustment is important in that it enables the apparatus to beset for a large variety of yarns. The kind of yarn being handled in the machine will determine from what point on the arm! 16 the weight 17 will bestarted. Hence it is desirable that the Wide range of'adjustment afforded by the slot 25 It is desirable that the slotted connection 16 that the other fork 29", these two forked arms standing at an oblique angle to each other and each being provided with a longitudinal slot for the reception of the pin 31, these two slots being joined at the juncture of the fork. If asimple, single slot were used, itwould result in causing the weight 17 and its carrying lever 16 to be raised when the weight 17 was in starting position, near the fulcrum of the lever. The forked slotted ends were devised to eliminate this lifting tendency and also to avoid a long unsightly upstanding end. F'gs. 1, 9 and 10 show the operation of this forked end. When the weight 17 is at starting position, its pin 31 will engage somewhere in the slot in arm 29". As the weight is moved outwardly, pin 31 will work down to the juncture of the slots and then along the slot in the other arm 29 and, when the lever 29 is restored to starting position, the movement of the pin 31 will of course be reversed. This arrangement permits positioning lever 29 in such relation to lever 16 that a much less acute angle exists between the plane through which the weight 17 travels and that through which the upper end of lever 29 moves than would be the case were the aforesaid long single slot used'instead.

What I claim as new is: v 1. The combination with a mechanism for winding yarn having a friction-slip drive embodying a lever havinga slidable weight, of a rock-shaft and means for rocking it as the warp-beam increases in size, an arm fastened tosaid rock-shaft, a lever for sliding the weight, and an adjustable device for. connecting this lever to said armto move the weight toward the free end of the lever, said adjustable device embodying a rod pivotally connected at its upper end to the lever, and a lever having a slotted connection to the lower end of said rod and a pivotal connecbeing constructed of a pair of slotted arms angularly arranged with respect to each other, the slots'in the arms being joined at the juncture of the arms.

The combination with a mechanism for winding yarn having a friction-slip drive embodying a lever having a slidable weight, of a rock-shaft and means for rocking it as the warp-beam increases in size, an arm fastened to said rock-shaft, a lever for sliding the weight, an adjustable device for connecting this lever to said arm to move the weight toward the free end of the lever, and a pedal-operated rod. connected to the aforesaid mechanism to reversethe movement of the parts for the purpose of moving the weight back toward the fulcrum of the lever.

4. The combination with a slasher, of a loom beam supported near the same to receive the warp from the slasher, means including a friction clutchto drive the loom beam, means including a control lever to act upon the friction clutch, a weight mounted T upon the control lever to move longitudinally thereof, a press roll arranged to engage the warp being wound upon the 100111 beam and to be shifted thereby, a'support for thepress roll, an operating element connected with the support and shifted thereby, an element arranged to'be depressed by the operating element, and connecting means between the last named element andthe weight. I a V In testimony whereof I hereunto affix my signature this 17th day of June, 1 926." LEE'LLOYD GOWAN. 

